Wall covering



FIG. 1 is a top plan view of a wall covering showing my new design.

The undisclosed bottom and sides of the wall covering are plain and unornamented. The drawing further shows only a portion of the wall covering upon which the design, repeated in units bounded by the intersecting and broken lines, is applied. The intersecting and broken lines are in no way intended to form a part of the design as shown and are for illustrative purposes only. 

The ornamental design for a wall covering, as shown and described. 